Pump-head.



No. 771,005. PATENTED SEPT. 2'7, 1904. S. M. FULTON.

PUMP HEAD.

APPLICATION FILED FEB. 10, 1904.

N0 MODEL mums-sum 1.

a D E [NVENTOR MWIZlM/l No. 771,005. PATENTED SEPT. 27, 1904. s. M.FULTON.

PUMP HEAD.

APPLICATION FILED FEB. 10, 1904. N0 MODEL, 2 SHEETS-SHEET 2.

/ikilmlhm r z 1: A1 may Patented September 27, 1904.

PATENT OFFICE.

SAMUEL M. FULTON, OF POMONA, CALIFORNIA.

PUMP-HEAD.

SPECIFICATION forming part of Letters Patent No. 771,005, datedSeptember 2'7, 1904.

To all whom it may concern.-

Be it known that I, SAMUEL M. FULTON, a citizen of the United States,residing at P0- mona, in the county of Los Angeles, State of California,have invented certain new and useful Improvements in Pump-Heads, ofwhich the following is a specification, reference being had therein tothe accompanying drawings.

This invention relates to pump-heads, and particularly to a structurefor driving a plurality of plungers by a variable motion to secure acontinuous flow.

The invention has for an object to improve the construction of drivingmechanism for a plurality of plungers whereby a slow upward stroke isimparted to one plunger while the other is effecting a quick downwardstroke.

A further object of the invention is to so construct and arrange thedriving means that a lap of the plungers at the end of each stroke issecuredthat is, one plunger will start upward and take the load prior tothe completion of the downward stroke of the other plunger, whereby thecolumn of water is kept in motion and the hammer or jar due to stoppingand starting of the column of water entirely obviated.

A further object of the invention is to improve the details ofconstruction of the driving mechanism and the connection therefrom tothe plunger-rods.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by theappended claims.

In the drawings, Figure 1 is a front elevation of the invention; Fig. 2,a plan thereof with parts in section. Fig. 3 is a vertical section takenat one side of the walkingbeams. Fig. 4 is an enlarged vertical sectionthrough the connection for the plunger-rods, and Fig. 5 is a detail sideelevation of one of the connecting-links.

Like letters of reference refer to like parts in the several figures ofthe drawings.

The letter A designates a foundation, which may be of any desiredcharacter of materialfor instance, concrete, as indicated at A- and isprovided at opposite sides with sup- Application filed February 10,1904. Serial No. 193,002. (No model.)

porting-walls A, having tie-rods A embedded therein for the purpose ofretaining the bearing-plates A in position. These plates are providedwith a hearing A at the upper portion of the base for one of thewalkingbeams B and a similar bearing A at the upper portion of the wallA to receive the upper walking-beam. At the forward portion of this wallbearing A is provided for the upper gear C, while a similar bearing A isprovided at the front lower portion of the walls A to receive the lowergear C. Intermediate of the bearings A and A bearings A are provided toreceive the driving-shaft G which carries the pinion C and also thedriving-pulley O".

Extending forwardly from the walls A are supporting-brackets D, adaptedto retain the vertically-disposed guide-rod D in position, which rod issecured in any desired manner at-its lower endfor instance, to thepumptop D as shown in Fig. 3.fron1 which the discharge-pipe D extends.Extending through the packing-box of this top are the separate andindependent plunger-rods E and F, the latter surrounding the former. Theform of foundation or support just described has been found to be veryeflicient in use; but any other desired construction may be used, asfound most convenient.

The plunger-rod E is provided with a crosshead E, secured thereto in anydesired mannerfor instance, by threading the end of the rod into anaperture E therein. Into this same aperture a guide rod E is alsothreaded and extends upward through a bearing-sleeve E, carried by thebracket D. At opposite ends of the cross-head E pintles E are providedand adapted to receive the connecting-links G, extending from thewalkingbeam B. This cross-head is provided at one side with a collar E,adapted to slide upon the guide-rod D. The tubular plunger-rod F is alsoprovided with a cross-head F, having an aperture F into which the rod isthreaded, and which aperture is also provided with a packing cap or boxF The opposite sides of the cross-head F are provided with pintles toreceive the links Gr. These links are provided at opposite ends witheyes Gr,

7 sired lap in their travel.

carrying bushings G, which are clamped in position by means of the boltsG", the {lCljUStment of which may be regulated by a set screw G, asshown in Fig. 5. This provides a strong construction and one in whichthe bushings can be easily removed and replaced by loosening theclamping-bolts.

Each of the walking-beams B is provided at its free end with forked armsB, carrying pintles B adapted to fit within the bushings G carried bythe links. These pintles may be secured to the arms in any desiredmanner-for instance, by threading therein, as shown at B while the linksmay be retained upon the pintles by a cotter-pin or similar device B,inserted in the ends of the pintles, as shown in Fig. a. Similar pins Eare provided upon the pintles of the cross-head E and pins F upon thecross-head F from the plunger-rod F. This latter cross-head is providedwith a guide-collar F, disposed upon the rod 1), similar to the collarE, already described. Each of the walking-beams may be provided at itspivoted end with a plurality of pivotal points, so that the pivot may bechanged so as to give the plungers any de- Each of these beams is alsoprovided with a removable wall at its slotted end, as shown at .B, whichmay be secured in position by screws B and forms one wall of theslideway within which the twopart bearing-box H, carried by thewrist-pin H, is adapted to travel. By the removal of the part B thewrist-pin box H can be readily placed in position.

The invention may be used with a single set of gears C C anddriving-pinion but for the purpose of securing an even motion andproperlydistributing the weight and pull these parts have beenduplicated at opposite sides of the walking-beams, and the wrist pins Hextend from one of the gears to the opposite one, while thedriving-pinion C is likewise duplicated on the shaft C to impart powerto the opposite sets of gears.

It will be noted that the walking-beams are connected to the gears uponopposite sides thereof, so as to cause the plunger-rods to movealternately in opposite directions and to produce a variable motionthereofthat is, one plunger will travel slowly upward while the other ismaking a quick down\ ard stroke, and vice versa. The walking-beams arealso adjusted so that during this variable movement a lap of theplungers at the top and bottom of the stroke is secured-that is, oneplun ger reverses its direction of travel while the other plungercontinues in the direction which it has been traveling, thus keeping thecolumn of water in motion and preventing the hammering and jarringincident to stopping and starting the column of water. It also requiresa minimum of power to operate a pump having this variable motion ascompared -with pumps which have a uniform motion and where a column ofwater stops at the end of each stroke of the pistons.

1n the operation of the invention it will be seen that when thedriving-pinion is rotated in the direction of the arrow in Fig. 3 itcauses a rotation of the gears O and C in the same direction. With theparts in the position in Fig. 3 this causes the upper walking-beam torise slowly and the wrist-pin box to move in the slot of the beam awayfrom the pivoted end thereof, thus raising the plunger-rod E slowly andsteadily. At the same time the lower walking beam is raised in themovement of the gear C toward the beam-pivot, while the wrist-pin boxtravels in its slot in the same direction, thus producing a quickdownward movement of the plunger-rod F. It will be observed that thedisposition of the beams and wrist-pins is such that the wrist-pin inthe lower gear is at the top of the stroke and has passed a center lineextending through the axis of the gears when the wrist-pin in the uppergear has passed the lower center point and is on'its upward movement,and this while the lower wrist-pin is passing its center line. By thismeans one plunger is caused to pass the point of reversal in directionand take the load prior to the completion of the stroke of the otherplunger, and the amount or extent of this lap of the plungers may beadjusted by shifting the pivotal point of the beams. It will also beseen that all of the parts of this pump-head are placed at one side ofthe well, so that in making disconnections it is not necessary to removethe frame or any part thereof, except the connections to theplunger-rod, while all the working parts are located above the groundwhere they are easily accessible and not disposed in a pit beneath thepump-frame, as frequently occurs. The variable motion of the plungersproduces a continuous stream through a pumpcolumn or discharge-pipe bythe use of the two sets of gears cooperating, as described, with thealternating plungers, one of which moves upward with aslow steady motionwhen carrying a load, while the other is traveling downward with muchmore speed to receive a load. The invention is also designed to preventwhat are known as overhanging bearings--that is, the load is equallydivided by the use of the duplicate gears upon each side of the beams,thus preventing any side pull and providing a pump-head which can beplaced at one side of the well, so as not to interfere with loweringbuckets or material therein and also furnishing a convenient means fordisconnecting the plunger-rods when it is necessary to make repairs ofany character. It will also be observed that the forked ends of thewalkingbeams and the link connection with the plunger-rods at both sidesof the cross-heads carried thereby permit an equal distribution of thepower on both sides of the plunger, thereby preventing springing themout of line,

which often happens where the power is applied to one side of theplunger only. The lap in the stroke of the plungers, whereby onereverses its direction of movement prior to the completion of the strokeof the other, keeps the column of water in constant motion and preventsthe jar and injury due to stopping and starting the column of water,while it also requires a minimum of power to operate the pump under suchconditions.

It will be obvious that changes may be made in the details ofconstruction and configuration of the several parts of the inventionwithout departing from the spirit thereof as defined by the appendedclaims.

Having described my invention and set forth its merits, what I claim,and desire to secure by Letters Patent, is-

1. In a pump-head, a plurality of plunger-o rods, a plurality ofindependent gears provided with wrist-pins thereon, independentwalking-beams pivoted at one end and provided with a sliding connectionwith said pins between the ends of the beams, means connecting thefreeend of each beam with a plunger-rod, and a single driving-shaftgeared to rotate said gears in unison and in the same direction toalternate the oscillation of the beams.

2. In a pump-head, a plurality of plungerrods, a plurality ofindependent gears provided with wrist-pins thereon, independentwalking-beams pivoted at one end and provided with a sliding connectionwith said pins between the ends of the beams, means connecting the freeend of each beam with a plunger-rod, and a single driving-shaft having apinion thereon meshing with each of said gears to simultaneouslydrive'them in the same direction.

3. In a pumphead, a plurality of plungerrods, a plurality of gearsdisposed one above another and provided with wrist-pins thereon,independent walking-beams disposed one above another in a commonvertical plane, a pivot for one end of said beams, a connection betweenthe opposite end of said beams and the plunger-rods, and a connectionbetween said gears and beams between the ends of the latter.

4. In a pump-head, a plurality of plungerrods, a plurality of gearsdisposed one above another and provided with wrist-pins thereon,independent walking-beams disposed one above another in a commonvertical plane, a pivot for one end of said beams, a connection betweensaid gears and beams between the ends of the latter, a bifurcatedportion at the free end of each beam adapted to embrace one of theplunger-rods, and a pivotal connection from said portion to each of theplunger-rods.

5. In a pump-head, a plurality of plungerrods, a plurality of earsdisposed one above another and provided with wrist-pins thereon,independent walking-beams disposed one above another in a commonvertical plane, a pivot for one end of said beams, a connection betweensaid gears and beams between the ends of the latter, abifurcated portionat the free end of each beam adapted to embrace one of the plunger-rods,a pivotal connection from said portion to each of the plunger-rods, anda single driving-shaft provided with a pinion disposed between saidgears and meshing with each thereof.

6. In a pump-head, a plurality of plungerrods, a plurality ofindependent gears provided with inwardly extending wrist-pins thereon,independent walking-beams pivoted at one end and slidingly connectedwith said wrist-pins between their ends, independent shafts for each ofsaid gears, and asingle driving-shaft geared to simultaneously driveeach gear in the same direction.

7. In a pump-head, a plunger-rod, parallel gears disposed uponindependent shafts and provided with a wrist-pin extending between thesame, a walking-beam pivoted at one end and disposed upon the wrist-pinbetween said gears, and a connection between the outer end of the beamand said plunger-rod.

8. In a pump-head, a plurality of plungerrods, two sets of gears eachset being connected by a wrist-pin, means for rotating said sets in thesame direction, walking-beams disposed between the gears of each set andprovided with a slideway to receive said wristpins, a pivotal supportfor one end of said beams, a removable Wall for said slideway, and awrist-pin box disposed in said way.

9. In a pump-head, two sets of gears each set being connected by awrist-pin, means for rotating said sets in the same direction,walking-beams disposed between the gears of each set and provided with aslideway to receive said wrist-pins, a pivotal support for one end ofsaid beams, a removable wall for said slideway, a wrist-pin box disposedin said way, a plurality of plunger-rods, forked ends upon said beams toembrace said rods, a cross-head carried by-said rods, and linksconnecting said rods and beams.

10. In a pump-head, two sets of gears each set being connected by awrist-pin, means for rotating said sets in the same direction,walking-beams disposed between the gears of each set and provided with aslideway to receive said wrist-pins, a pivotal support for one end ofsaid beams, a removable Wall for said slideways, a wrist-pin boxdisposed in said ways, a plurality of plunger-rods, forked ends uponsaid beams to embrace said rods, a cross-head carried by said rods,links connecting said rods and beams, a guide-rod parallel to theplunger-rods, and a sleeve disposed on said guide-rod and carried bysaid cross-heads.

gears in unison, a plurality of independentlypivoted walking-beamsdisposed one above another in a common vertical plane, and connectionsbetween the outer end of the walkingbeams and each of the plunger-rods.

12. In apuinp-head, a Walking-beam, means for oscillating the same,pintles extending from the opposite sides of the free end of said beam,a plunger-rod, a cross-head secured thereto and having pintles atopposite sides, links extending from the beam-pintles to the cross-headpintles, bearing-boxes carried by the opposite ends of said links,clampingscrews extending through said links, and a setscrew threadedinto one wall of the link to bear against the opposite Wall.

13. In a pump-head, a plunger-rod, a foun- SAMUEL M. FULTON.l/Vitnesses:

Geo. W. OGLE, J. E. li loGoMAs.

